景象匹配定位系统建模与仿真

Modeling and simulation of the scene matching and orientation system

介绍了景象匹配系统性能评估的一种方法.该方法通过分析各种影响景象匹配系统工作性能的误差因素,建立相应的误差模型;并利用这些误差模型在实际设备硬件平台上进行仿真试验,从而实现景象匹配系统在不同使用条件下进行仿真和评估,最终得出景象匹配系统在不同使用条件下的匹配概率、匹配精度和适应性.本技术克服了以往仿真系统成像模型和仿真注入系统复杂、没有考虑地面反射特性、生成图像与真实效果不一致、各误差模型与仿真回路不能形成一套系统等问题,提高了仿真的灵活性和真实性,大大降低了操作复杂程度;通过成像模型和仿真注入技术对系统进行仿真,不仅能够大量减少外场试验的次数,还能够在实际使用时对未知区域的景象匹配性能进行评估,提高系统的适用能力.

A method of evaluating a scene matching system's capability is presented.By analyzing several factors affecting the scene matching system's capability,corresponding error models are founded.Based on these error models,the system simulation is realized on the actual facilities.Different scene matching systems are evaluated under various conditions,and a great deal of data,such as the matching probability,precision and adaptability,are obtained.This technique overcomes several problems of the old simulation system,for example,the system-complexity,ignoring the ground reflectibility,differences between the building images and the real ones,etc. In this way,the convenience and veracity of the simulation are increased,and the operating complexity is reduced greatly.Furthermore,this technique not only reduces the times of the outside experimentation,but also increases the system's adaptability.